点滴记录——LinuxMysql数据库误删root用户
点滴记录——LinuxMysql数据库误删root用户
在Linux中有时安装Mysql会出现没有root用户的状况,或者说root账户被从mysql.user表中误删除,这样就导致很多权限无法控制。解决办法是重新创建root用户,并授予所有权限,具体方法如下:
1. 修改/etc/my.conf文件,添加skip-grant-tables
2. 重启mysql服务[mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 skip-grant-tables [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid
/etc/init.d/mysqld restart3. 使用下列命令登陆mysql,无需密码
mysql4. 登陆后,重新添加root用户
5. 使用下列命令重新登陆, 设置root的密码use mysql; insert into user set user='root',ssl_cipher='',x509_issuer='',x509_subject=''; update user set Host='localhost',select_priv='y', insert_priv='y',update_priv='y', Alter_priv='y',delete_priv='y',create_priv='y',drop_priv='y',reload_priv='y',shutdown_priv='y',Process_priv='y',file_priv='y',grant_priv='y',References_priv='y',index_priv='y',create_user_priv='y',show_db_priv='y',super_priv='y',create_tmp_table_priv='y',Lock_tables_priv='y',execute_priv='y',repl_slave_priv='y',repl_client_priv='y',create_view_priv='y',show_view_priv='y',create_routine_priv='y',alter_routine_priv='y',create_user_priv='y' where user='root'; 先退出:quit;
6. 修改/etc/my.conf文件,将skip-grant-tables去掉,然后重启mysqlmysql -u root update mysql.user set password=password('yourrootpasswd') where user='root'; update user set host = '%' where user = 'root'; #设置远程机器可访问mysql,如果不需要可不是设置 flush privileges; quit;
/etc/init.d/mysqld restart7. 正常则一切OK
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